Castle Island Weather Forecast

    • 46
    • 51

    Rain

    • 47
    • 53

    Mostly Cloudy

    • 45
    • 54

    Partly Sunny

    • 44
    • 53

    Partly Sunny

    • 47
    • 52

    Chance Rain

    • 46
    • 52

    Rain

Today 2 Feb San Juan County

Breezy. Rain in the Morning, then cloudy with a chance of rain in the afternoon. Rainfall Amounts a quarter to a half inch possible. Highs near 50. Southeast wind 15 to 25 Mph.

Tonight 2 Feb San Juan County

Mostly cloudy. A chance of rain in the Evening, then a slight chance of rain late in the evening. Lows in the 40s. Southeast wind 10 to 15 Mph in the evening becoming light.

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Castle Island Temperature Statistics

February Temperature

Whidbey Island Naval Air Station - Ault Field (8.1 miles)

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Climate (2021–Present)

Whidbey Island Naval Air Station - Ault Field (8.1 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    56.1 °F
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